Black Box DC1 Mini HD Rearview Camera Attachment - 170&deg; Viewing Angle Vehicle Car Rear View Backup & Dual Camera for SM1000 Smart Rearview Mirror Rear View & Dual Camera Attachment for the Black Box SM1000 Smart Rearview Mirror Full HD Color Recording with a 170 Degree Wide Angle Lens Auto Exposure for enhanced Night Vision, Auto Flicker Detection and Cancelation, AWG, AGC Hardwire Installation is required for proper use and function